Valve



June 22 1926.

G. HOLTZ VALVE Filed May 25, 1925 IN VEN TOR. ausmv 1 /01 72. v

A TTORNEY.

1,589,696 PATENT" ()F FICE.

GUSTAV HOLTZ, OF SAN FRANCISCO, CALIFORNIA.

VALVE.

Application filed May 25, 1925. Serial No. 32,554.

This invention relates to an improvedv quick opening, self closing valvewhich, due to the special construction and relative arrangement of theparts thereof, will operate easily, smoothly, without appreciable wearand without leakage, under high as well as low pressures.

One of the purposes of the invention is to provide a valve of thecharacter described which is simple as to construction, inexpensive,capable of being readily assembled and disassembled and which willrequire little or no attention or repair to maintain it in good workingorder.

The valve of this invention is characten ized by a novel packingarrangement located interiorly of the valve stem housing andconstituting a floating packing which is self compensating toprovide atight joint regardless of wear and which eliminates friction to anappreciable extent, the lasting qualities of the arrangement being afurther point of advantage.-

An additional feature of this invention comprises a small, compact,removable valve unit arranged in a specially constructed valve housing,which latter serves as a guide for the valve and stem, houses the valvelifting means, the valve closing spring and the packing arrangement andwhich also provides for a direct application of the pressure of thewater on the valve in such manner as to tend to close the valve at alltimes whereby a quick and positive closing action is insured.

lVith the above mentioned and other objects in view, the inventionconsists in the novel construction and combination of parts hereinafterdescribed, illustrated in the accompanying drawings, and set forth inthe claims hereto appended, it being understood that various changes inthe form, proportion, size and minor details of construction within thescope of the claims may be resorted to without departing from the spiritor sacrificing any of the advantages of the invention.

Referring to the drawing:

Fig. 1 represents a vertical sectional view of the valve of my inventionshowing it in open position.

Fig. 2 represents a side elevation of the valve parts as removed fromthe casing.

Fig. 3 represents a sectional view taken on the plane of line 33 of Fig.1.

Fig. 4: represents afragmentary side eleva ment 18.

tion of the valve, valve stem and packing arrangement, part of whichlatter is shown in section. The embodiment of the invention shown 11]the accompanying drawing comprises a valve casing 1 having threadedintake and discharge openings 2 and 3 and provided between theseopenings with a web at having a removable valve seat 5 fitted thereto.The valve unlt 6 extends into the casing through an opening 7 and isremovably held in place by a flanged internally threaded collar 8 whichscrews onto a nipple 9 carried by the casing. This collar engages: anannular flange 10 on the especially constructed cylindrical housing 11of the valve unit, said flange also engaging the outer end of thenipple. This disposes the valve 12 in proper relation to its seat sothat it may be seated and unseated while remaining in the lower end ofthe housing 11. 1

The valve 12 is removably secured in a cap 13 in the lower end of avalve stem 14, by a suitable fastening 15, the cap having a working orsliding fit within the lower end of the housing 11. The stem extendsupwardly through an opening 16 in the upper end of the housing 11 and onits upper end has an operating handle orlever 17 attached thereto. Thestem 14 has an enlargement 18 between its ends, which enlargement has atransverse hole 19 extending therethrough,

in which a pin 20 is removably fitted. Antifriction rollers 21 areloosely mounted on the ends of the pin and engage in angularly disposedslots 22 formed in the housing 11. An expansion spring 23 is mounted onthe stem and engages at its upper end a packing element supportingcollar 24 on the stem and its its lower end engages the enlarge Theportion of the housing 11' having the slots 22 therein is spaced fromthe walls of the valve casing and water therefore enters the housingthrough said slots. Thus the pressure of the water is directly appliedto the upper side of the valve in the housing 11 and tends to force thevalve towards its seat at all times. v The bore of the housing whichreceives the valve is enlarged as at 25 and the lower end of the valveis of less area than the upper end. with the result that a greater forceof the pressure is exerted on the upper side of the valve than on thelower side and the valve will fluid pressure.

The packing arrangement comprises two pairs of concentric packing ringssurrounding the stem 14L, each pair comprising an outer split ring 26surrounding an inner sectional ring 27. The upper and lower edges ofthese rings are beveled and the lower pair of rings engage the upperbeveled face 28 of the collar 2i whereas the upper pair of concentricrings rest upon the lower pair and engage a concavo-convex compressible,preferably rubber, washer 29 which in turn engage the beveled inner faceof the upper wall 30 of the housing 11. Engaged between and with theopposed beveled edges of the pair of rings is a compressible, preferablyrubber, ring 81 having a curved face engaging the beveled edges of therings 26 and 27, and a straight flat face engaged with inner side of thehousing 11. The pairs of rings 26 and 27'are in this waycircumferentially spaced from the housing 11 although closely engagedwith the stem 14:. The rubber ring 31 forces the inner of the concentricrings into tight engagement with the stem. The spring 23 pressing upwardon the packing rings causes the rubber ring 31 and concavo-convex rubberwasher to compress and force the packing rings into close engagementwith the stem at all times. These pressures on the packing rings causethem to be self adjusting and wear compensating thereby insuring a tightoint. The packing rings are preferably formed of some hard wearresisting packing material which will not set up appreciable friction. Ifind certain hard wood to be admirably suited, preferably l-ignum vitae,because it wears slowly and smoothly and conforms closely to :the stem.

hen the valve handle is turned in the proper direction the anti-frictionrollers 21 engaging in the oblique slots 22 cause the valve stem 14 tolift or move outward as it is rotated and thereby quickly and fullyunseats the valve. This movement is against the action of the spring andpressure of the water in the housing 11 and when the opera-- torreleases the handle the spring 23 and water pressure exert acombi'nedforce which causes the valve to quickly and positively close.

The valve unit being contained in the housing 11 may be quickly andeasily removed to renew the'seat or inspector repair the other valveparts. This unit is small,

compact and capableof being readily assembled and disassembled.

The especially constructed packing insures a lasting and tight leakproof joint without setting up friction to the extent that the valveopening action is made objectionably hard or stiifi.

I claim:

1. A valve comprising a casing having fluid intake and dischargeopenings, a seat between said openings, said casing having anotheropening therein, a valve unit extended through the last named openingand comprising a valve adapted to be moved towards and away from theseat, a tubular housing in which said valve has a working fit, means formoving the valve away from the seat, spring means for closing the valve,said tubular housing having openings therein permittng fluid to enterthe housing and assist in closing the valve, packing means disposedwithin said housing and means for removably holding the housing inplace.

2. A valve comprising a casing having intake and discharge openings andalso provided. with an additional opening, a valve seat within thecasing between said intake and discharge openings, a tubular housingextended into the casing through the last named opening, a valve havinga working lit in said housing, a valve stem extending upwardly from thevalve through said housing, a handle on the upper end of the stem, saidhousing having :angularly disposed slots, projections on the stemengaging in the slots, means for removably fastening the housing inplace, an abutment on the stem, a collar loosely mounted on the stem, anexpansion spring surrounding the stem with its ends engaged with saidabutment and said collar and packing means interposed between the collarand upper end of the housing, which packing means surrounds said stem. I

3. A valve comprising a casing having intake and discharge openings, avalve seat between said openings, a housing removably mounted within thecasing, a valve having a working lit with the lower end of the housingand arranged to remain Within said housing at all times, a valve stemextending upwardly from :the valve through said housing, a handleconnected to the upper end of the stem, projections extending from thestem, said housing having angularly disposed slots in which saidprojections engage through which slots fluid enters the housing wherebythe pressure of the fluid will assist in closing the valve and springmeans Within the housing for urging the valve against its seat.

4:. A valve comprising a casing having intake and discharge openings, avalve seat in the casing, a valve arranged to co-operate with the seat,a tubular housing extended into the casing in the lower end of whichhousing said valve has a working fit, a stem extending from the valvethrough the housing, means associated with the housing and stem forlifting the stem and valve on movement of the stem in one direction,spring means for urging the stem and valve in the other direction toclose the valve, a collar mounted on the stem and bei-ng urged upwardlyby the spring means, non-compressible packing rings surrounding and inclose engagement with the stem between the collar and outer end of thehousing, which rings are spaced circumferentially from the housing and acompressible packing ring engaging with and between said rings.

5. In a valve, a valve stem, a housing through which the stem extends, acollar loosely surrounding the stem, spring means yieldingly forcing thecollar upwardly, two spaced apart split non-compressible packing ringshaving oppositely bevelled opposed faces which surround the stem betweenone end of the housing and the collar, said rings beingcircumferentially spaced from the housing, a compressible ringinterposed between the outermost packing ring and the end of the housingand a compressible ring disposed between and in engagement with thebevelled opposed faces of said packing rings having a close fit againstthe inner side of the housing.

GUSTAV HOLTZ.

